Alps Mountaineering Caldera Backpack 5500, Green


The Caldera 5500 is a great internal to take along on all your backcountry treks. The Caldera was designed with features to make your hike more enjoyable. Beyond the easy to adjust suspension system, front and side pockets, and hydration pocket and port, you can also find an internal horizontal divider to arrange your gear, side compression straps, and extra-large #10 zippers on the lower door. All of these features will ensure that you’re ready for a successful and organized hike. So now you’re ready for your trip and your pack is full, but you still have a few things to take along… don’t worry! The top of the Caldera pack extends with a spindrift collar, so you can “over pack.” The top pocket adjusts up and down to keep it in the correct position and we’ve included an “Over the Top” compression strap to stabilize your extra gear. When it’s time to drop the internal and adventure onto a smaller trail, don’t worry about bringing along an additional small fanny pack, because our top lid converts to a fanny pack. If that’s not enough, the rain cover is INCLUDED! You don’t have to worry about spending additional money on accessories; you can find it all in the Caldera. This internal is a great example of what ALPS Mountaineering is all about… giving you great gear at an affordable price.


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Product Description

Caldera 5500 Green Description


  1. Shoulder Strap Padding Wraps to Back for Maximum Comfort
  2. Top Pocket Converts to a Fanny Pack
  3. Rain Cover Included
  4. Dual Aluminum Frame Stays
  5. Top Loading – Extendable Top Lid
  6. Spindrift Collar with Draw Cord
  7. “Over the Top” Compression Strap
  8. Hydration Pocket & Port
  9. Front Access to Main Compartment
  10. Front Mesh Pocket
  11. Multiple Side Compression Straps
  12. Lower Side Bottle Pockets
  13. Lower Door – #10 Zipper
  14. Internal Horizontal Divider
  15. Small & XL Waistbelt Options Available


  1. Torso Range: 18″ to 24″
  2. Fabric: Olive Polyester Ripstop
  3. Capacity: 5500 in³ (90 L)
  4. Weight: 6 lbs. 1 oz.

3 Waistbelt Size Options:

  • Youth Fits Waist 22″ – 26″
  • Standard Fits Waist 26″ – 40″
  • X-Large Fits Waist 40″ plus
Shipping Dimensions

  • Weight: 5.9 pounds.
  • Dimensional Weight: 16.81 pounds.
  • Dimensions: 15.25″ (W) x 6″ (H) x 31″ (D)
  • Weight Disclaimer: * Weight may vary based on configuration.
Manufacturer Information
Alps Mountaineering
1 White Pine
New Haven, MO 63068

Additional information

Weight 2.67619 lbs
Dimensions 78.74 x 38.735 x 15.24 in

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